Author(s): Wei Wang; Jianguo Zhou
Linked Author(s):
Keywords: Numerical study; Lattice Boltzmann model; Axisymmetic flows; Taylor Couette flows; Cold-flow Jets
Abstract: Recently, a reformulated axisymmetric Lattice Boltzmann model (AxLAB_R_) was presented by Zhou (Zhou, 2011). The main features are (1) the added sink or source and force terms are more simple than the other existing schemes; and (2) there is no requirement of calculation for velocity gradients with all the advantages of his earlier developed model (AxLAB). In this paper, we will apply the AxLAB_R_ to investigate the flow characteristics for two complex axisymmetric flows. First of all, the Taylor Couette flow which occurs between the two concentric cylinders with the inner cylinder rotating is considered, and then, different forced axisymmetric laminar cold-flow jets are taken into account with different values of forcing amplitudes in the jet. The numerical results will be compared with other existing numerical results or experimental data reported in previous studies to demonstrate the accuracy of the model. To show the performance of the proposed model, the same problems were also simulated by AxLAB. Numerical results showed that the present axisymmetric model is much more efficient than the 3D model for an axisymmetric flow problem.
Year: 2013